Who described the preamble of the constitution as political horoscope?

The preamble of the Constitution of India was described as a "political horoscope" by Dr. B.R. Ambedkar. He used this metaphor to emphasize its significance in outlining the fundamental principles and ideals that guide the Constitution, reflecting the aspirations of the nation. The preamble serves as a foundational statement of the objectives and values that the Constitution aims to achieve.